Reply to post:

You can do what you say.

Then you don't have 5G.

Or 4G.

Or 3G.

Probably not even 2G or GSM at all.

Hell, most of your ordinary infrastructure networking can be binned too (e.g. routers, switches, etc.).

And the computers / servers that run them. And the interfaces to the traditional telecoms network. Not to mention fibre convertors and other fibre interfaces, etc.

There comes a point, like in America, where you can choose to only use a certain nationality of products and *DEMAND* their source code, inspections, etc. and only ever use products that meet that.

And then you realise that code analysis is one of the most things in the world to do, needs top engineers to make sure it's happening properly, and they'll be analysing gear designed by world-class "adversaries" with government-levels of investment and tooling. And they'll need to do it before the product is released, for every product you want to use, for every firmware revision, in perpetuity, and for every new product that arrives (how do you know they didn't change the design/firmware?).